Basil started at this. "Is that really necessary?" he asked. "Couldn't we get leave?"

Deschamps shook his head. "I feel almost sure they won't give us leave," he said. "We are only members of the rank and file, remember. But 'nothing venture, nothing have,'—we must resign."

"Very well," Basil replied, "we will give them notice to-morrow." But as he said it he had a curious heart-pang as he thought of Ethel, and that, if anything went wrong, he must resign for ever any hopes of calling her his own.

"Now, about experiments and the construction of the apparatus," Deschamps continued. "We must have a workshop, to begin with."

"This is at your service," the brothers said eagerly.

Deschamps bowed. "A thousand thanks," he said. "Nothing could be better fitted for the purpose. Here we shall be absolutely secret. You have a forge and many appliances which will be useful. To-morrow I must buy other machinery and certain tools. Fortunately you have the electric light here, and I can tap one of the plugs for all the current that I shall require for experimental purposes."

Basil snapped his fingers as if an idea had just come to him. "By Jove, Emile!" he said, "how on earth shall we manage at Monte Carlo? We cannot work with batteries. First of all, we could never get them into the hotel without being seen, and even if we did, we shouldn't have enough power."

"You don't know the Principality," Emile answered. "All the hotels have the completest installation of electric light possible. It will be the simplest thing to tap one of the mains and connect it with our new portable transformer. We can get exactly what current we require."

"Good," Basil said, realising how deeply his friend had gone into the technical side of the great coup.

Edouard Carnet spoke. "If you will come here to-morrow at midday," he said, "having already resigned your posts at the Société Générale, I will have drawn a sufficient sum of money from the bank to enable you to make all necessary purchases. Then we can go ahead as fast as we like."